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Finding the Fourth Proportional to 71,637.16, 98,958.18 and 65,253.16

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Solution

The fourth proportional to 71,637.16, 98,958.18 and 65,253.16 is: 90,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,637.16 : 98,958.18 = 65,253.16 : x
  2. Step 2: Convert to fraction form
    71,637.16/98,958.18 = 65,253.16/x
  3. Step 3: Cross multiply
    71,637.16x = 98,958.18 × 65,253.16
  4. Step 4: Simplify right side
    71,637.16x = 6,457,333,952.85
  5. Step 5: Solve for x
    x = 6,457,333,952.85/71,637.16
  6. Step 6: Final answer
    x = 90,139.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.