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Finding the Fourth Proportional to 70,800.69, 97,707.56 and 38,970.93

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Solution

The fourth proportional to 70,800.69, 97,707.56 and 38,970.93 is: 53,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800.69 : 97,707.56 = 38,970.93 : x
  2. Step 2: Convert to fraction form
    70,800.69/97,707.56 = 38,970.93/x
  3. Step 3: Cross multiply
    70,800.69x = 97,707.56 × 38,970.93
  4. Step 4: Simplify right side
    70,800.69x = 3,807,754,286.38
  5. Step 5: Solve for x
    x = 3,807,754,286.38/70,800.69
  6. Step 6: Final answer
    x = 53,781.32

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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.