Home / 77,478.80-106,971.88-59,541.20

Finding the Fourth Proportional to 77,478.80, 106,971.88 and 59,541.20

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Solution

The fourth proportional to 77,478.80, 106,971.88 and 59,541.20 is: 82,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,478.80 : 106,971.88 = 59,541.20 : x
  2. Step 2: Convert to fraction form
    77,478.80/106,971.88 = 59,541.20/x
  3. Step 3: Cross multiply
    77,478.80x = 106,971.88 × 59,541.20
  4. Step 4: Simplify right side
    77,478.80x = 6,369,234,101.46
  5. Step 5: Solve for x
    x = 6,369,234,101.46/77,478.80
  6. Step 6: Final answer
    x = 82,206.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.