Home / 67,875.10-101,812.65-66,417.10

Finding the Fourth Proportional to 67,875.10, 101,812.65 and 66,417.10

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Solution

The fourth proportional to 67,875.10, 101,812.65 and 66,417.10 is: 99,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,875.10 : 101,812.65 = 66,417.10 : x
  2. Step 2: Convert to fraction form
    67,875.10/101,812.65 = 66,417.10/x
  3. Step 3: Cross multiply
    67,875.10x = 101,812.65 × 66,417.10
  4. Step 4: Simplify right side
    67,875.10x = 6,762,100,956.32
  5. Step 5: Solve for x
    x = 6,762,100,956.32/67,875.10
  6. Step 6: Final answer
    x = 99,625.65

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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.