Home / 67,639,812.80-101,459,719.20-66,520,068.80

Finding the Fourth Proportional to 67,639,812.80, 101,459,719.20 and 66,520,068.80

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Solution

The fourth proportional to 67,639,812.80, 101,459,719.20 and 66,520,068.80 is: 99,780,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,639,812.80 : 101,459,719.20 = 66,520,068.80 : x
  2. Step 2: Convert to fraction form
    67,639,812.80/101,459,719.20 = 66,520,068.80/x
  3. Step 3: Cross multiply
    67,639,812.80x = 101,459,719.20 × 66,520,068.80
  4. Step 4: Simplify right side
    67,639,812.80x = 6,749,107,501,612,681
  5. Step 5: Solve for x
    x = 6,749,107,501,612,681/67,639,812.80
  6. Step 6: Final answer
    x = 99,780,103.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.