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Finding the Fourth Proportional to 64,877.80, 97,316.70 and 25,421.80

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Solution

The fourth proportional to 64,877.80, 97,316.70 and 25,421.80 is: 38,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,877.80 : 97,316.70 = 25,421.80 : x
  2. Step 2: Convert to fraction form
    64,877.80/97,316.70 = 25,421.80/x
  3. Step 3: Cross multiply
    64,877.80x = 97,316.70 × 25,421.80
  4. Step 4: Simplify right side
    64,877.80x = 2,473,965,684.06
  5. Step 5: Solve for x
    x = 2,473,965,684.06/64,877.80
  6. Step 6: Final answer
    x = 38,132.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.