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Finding the Fourth Proportional to 72,317.90, 97,318.12 and 72,317.90

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Solution

The fourth proportional to 72,317.90, 97,318.12 and 72,317.90 is: 97,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,317.90 : 97,318.12 = 72,317.90 : x
  2. Step 2: Convert to fraction form
    72,317.90/97,318.12 = 72,317.90/x
  3. Step 3: Cross multiply
    72,317.90x = 97,318.12 × 72,317.90
  4. Step 4: Simplify right side
    72,317.90x = 7,037,842,070.35
  5. Step 5: Solve for x
    x = 7,037,842,070.35/72,317.90
  6. Step 6: Final answer
    x = 97,318.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.