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Finding the Fourth Proportional to 70,306.79, 97,068.65 and 62,740.10

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Solution

The fourth proportional to 70,306.79, 97,068.65 and 62,740.10 is: 86,621.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,306.79 : 97,068.65 = 62,740.10 : x
  2. Step 2: Convert to fraction form
    70,306.79/97,068.65 = 62,740.10/x
  3. Step 3: Cross multiply
    70,306.79x = 97,068.65 × 62,740.10
  4. Step 4: Simplify right side
    70,306.79x = 6,090,096,736.84
  5. Step 5: Solve for x
    x = 6,090,096,736.84/70,306.79
  6. Step 6: Final answer
    x = 86,621.75

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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.