Home / 87,218,846.40-130,828,269.60-53,122,641.60

Finding the Fourth Proportional to 87,218,846.40, 130,828,269.60 and 53,122,641.60

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Solution

The fourth proportional to 87,218,846.40, 130,828,269.60 and 53,122,641.60 is: 79,683,962.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218,846.40 : 130,828,269.60 = 53,122,641.60 : x
  2. Step 2: Convert to fraction form
    87,218,846.40/130,828,269.60 = 53,122,641.60/x
  3. Step 3: Cross multiply
    87,218,846.40x = 130,828,269.60 × 53,122,641.60
  4. Step 4: Simplify right side
    87,218,846.40x = 6,949,943,277,108,975
  5. Step 5: Solve for x
    x = 6,949,943,277,108,975/87,218,846.40
  6. Step 6: Final answer
    x = 79,683,962.40

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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.