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Finding the Fourth Proportional to 70,603.80, 97,430.32 and 38,337.15

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Solution

The fourth proportional to 70,603.80, 97,430.32 and 38,337.15 is: 52,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,603.80 : 97,430.32 = 38,337.15 : x
  2. Step 2: Convert to fraction form
    70,603.80/97,430.32 = 38,337.15/x
  3. Step 3: Cross multiply
    70,603.80x = 97,430.32 × 38,337.15
  4. Step 4: Simplify right side
    70,603.80x = 3,735,200,792.39
  5. Step 5: Solve for x
    x = 3,735,200,792.39/70,603.80
  6. Step 6: Final answer
    x = 52,903.68

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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.