Home / 86,937.20-130,332.90-45,384.20

Finding the Fourth Proportional to 86,937.20, 130,332.90 and 45,384.20

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Solution

The fourth proportional to 86,937.20, 130,332.90 and 45,384.20 is: 68,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,937.20 : 130,332.90 = 45,384.20 : x
  2. Step 2: Convert to fraction form
    86,937.20/130,332.90 = 45,384.20/x
  3. Step 3: Cross multiply
    86,937.20x = 130,332.90 × 45,384.20
  4. Step 4: Simplify right side
    86,937.20x = 5,915,054,400.18
  5. Step 5: Solve for x
    x = 5,915,054,400.18/86,937.20
  6. Step 6: Final answer
    x = 68,038.24

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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.