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Finding the Fourth Proportional to 58,440, 87,660 and 19,528

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Solution

The fourth proportional to 58,440, 87,660 and 19,528 is: 29,292

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,440 : 87,660 = 19,528 : x
  2. Step 2: Convert to fraction form
    58,440/87,660 = 19,528/x
  3. Step 3: Cross multiply
    58,440x = 87,660 × 19,528
  4. Step 4: Simplify right side
    58,440x = 1,711,824,480
  5. Step 5: Solve for x
    x = 1,711,824,480/58,440
  6. Step 6: Final answer
    x = 29,292

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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.