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Finding the Fourth Proportional to 42,802.40, 64,106.40 and 25,306.40

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Solution

The fourth proportional to 42,802.40, 64,106.40 and 25,306.40 is: 37,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,802.40 : 64,106.40 = 25,306.40 : x
  2. Step 2: Convert to fraction form
    42,802.40/64,106.40 = 25,306.40/x
  3. Step 3: Cross multiply
    42,802.40x = 64,106.40 × 25,306.40
  4. Step 4: Simplify right side
    42,802.40x = 1,622,302,200.96
  5. Step 5: Solve for x
    x = 1,622,302,200.96/42,802.40
  6. Step 6: Final answer
    x = 37,902.13

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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.