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Finding the Fourth Proportional to 87,048.40, 130,615.80 and 49,637.20

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Solution

The fourth proportional to 87,048.40, 130,615.80 and 49,637.20 is: 74,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,048.40 : 130,615.80 = 49,637.20 : x
  2. Step 2: Convert to fraction form
    87,048.40/130,615.80 = 49,637.20/x
  3. Step 3: Cross multiply
    87,048.40x = 130,615.80 × 49,637.20
  4. Step 4: Simplify right side
    87,048.40x = 6,483,402,587.76
  5. Step 5: Solve for x
    x = 6,483,402,587.76/87,048.40
  6. Step 6: Final answer
    x = 74,480.43

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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.