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Finding the Fourth Proportional to 88,878.40, 133,058.40 and 79,547.20

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Solution

The fourth proportional to 88,878.40, 133,058.40 and 79,547.20 is: 119,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,878.40 : 133,058.40 = 79,547.20 : x
  2. Step 2: Convert to fraction form
    88,878.40/133,058.40 = 79,547.20/x
  3. Step 3: Cross multiply
    88,878.40x = 133,058.40 × 79,547.20
  4. Step 4: Simplify right side
    88,878.40x = 10,584,423,156.48
  5. Step 5: Solve for x
    x = 10,584,423,156.48/88,878.40
  6. Step 6: Final answer
    x = 119,088.81

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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.