Home / 86,780.48-130,245.60-42,440

Finding the Fourth Proportional to 86,780.48, 130,245.60 and 42,440

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Solution

The fourth proportional to 86,780.48, 130,245.60 and 42,440 is: 63,696.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.48 : 130,245.60 = 42,440 : x
  2. Step 2: Convert to fraction form
    86,780.48/130,245.60 = 42,440/x
  3. Step 3: Cross multiply
    86,780.48x = 130,245.60 × 42,440
  4. Step 4: Simplify right side
    86,780.48x = 5,527,623,264
  5. Step 5: Solve for x
    x = 5,527,623,264/86,780.48
  6. Step 6: Final answer
    x = 63,696.62

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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.