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Finding the Fourth Proportional to 82,989.90, 124,309.80 and 56,352.24

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Solution

The fourth proportional to 82,989.90, 124,309.80 and 56,352.24 is: 84,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,989.90 : 124,309.80 = 56,352.24 : x
  2. Step 2: Convert to fraction form
    82,989.90/124,309.80 = 56,352.24/x
  3. Step 3: Cross multiply
    82,989.90x = 124,309.80 × 56,352.24
  4. Step 4: Simplify right side
    82,989.90x = 7,005,135,683.95
  5. Step 5: Solve for x
    x = 7,005,135,683.95/82,989.90
  6. Step 6: Final answer
    x = 84,409.50

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1.5x scale

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.