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Finding the Fourth Proportional to 28,073,592.40, 42,110,388.60 and 12,957,048.40

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Solution

The fourth proportional to 28,073,592.40, 42,110,388.60 and 12,957,048.40 is: 19,435,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073,592.40 : 42,110,388.60 = 12,957,048.40 : x
  2. Step 2: Convert to fraction form
    28,073,592.40/42,110,388.60 = 12,957,048.40/x
  3. Step 3: Cross multiply
    28,073,592.40x = 42,110,388.60 × 12,957,048.40
  4. Step 4: Simplify right side
    28,073,592.40x = 545,626,343,233,008.25
  5. Step 5: Solve for x
    x = 545,626,343,233,008.25/28,073,592.40
  6. Step 6: Final answer
    x = 19,435,572.60

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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.