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Finding the Fourth Proportional to 72,943.20, 108,842.22 and 65,488.23

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Solution

The fourth proportional to 72,943.20, 108,842.22 and 65,488.23 is: 97,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,943.20 : 108,842.22 = 65,488.23 : x
  2. Step 2: Convert to fraction form
    72,943.20/108,842.22 = 65,488.23/x
  3. Step 3: Cross multiply
    72,943.20x = 108,842.22 × 65,488.23
  4. Step 4: Simplify right side
    72,943.20x = 7,127,884,337.07
  5. Step 5: Solve for x
    x = 7,127,884,337.07/72,943.20
  6. Step 6: Final answer
    x = 97,718.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.