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Finding the Fourth Proportional to 70,701.76, 97,569.08 and 38,870.88

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Solution

The fourth proportional to 70,701.76, 97,569.08 and 38,870.88 is: 53,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,701.76 : 97,569.08 = 38,870.88 : x
  2. Step 2: Convert to fraction form
    70,701.76/97,569.08 = 38,870.88/x
  3. Step 3: Cross multiply
    70,701.76x = 97,569.08 × 38,870.88
  4. Step 4: Simplify right side
    70,701.76x = 3,792,595,318.19
  5. Step 5: Solve for x
    x = 3,792,595,318.19/70,701.76
  6. Step 6: Final answer
    x = 53,642.17

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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.