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Finding the Fourth Proportional to 67,411.80, 101,117.70 and 64,819.80

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Solution

The fourth proportional to 67,411.80, 101,117.70 and 64,819.80 is: 97,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,411.80 : 101,117.70 = 64,819.80 : x
  2. Step 2: Convert to fraction form
    67,411.80/101,117.70 = 64,819.80/x
  3. Step 3: Cross multiply
    67,411.80x = 101,117.70 × 64,819.80
  4. Step 4: Simplify right side
    67,411.80x = 6,554,429,090.46
  5. Step 5: Solve for x
    x = 6,554,429,090.46/67,411.80
  6. Step 6: Final answer
    x = 97,229.70

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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.