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Finding the Fourth Proportional to 83,210.70, 124,816.05 and 70,040.10

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Solution

The fourth proportional to 83,210.70, 124,816.05 and 70,040.10 is: 105,060.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,210.70 : 124,816.05 = 70,040.10 : x
  2. Step 2: Convert to fraction form
    83,210.70/124,816.05 = 70,040.10/x
  3. Step 3: Cross multiply
    83,210.70x = 124,816.05 × 70,040.10
  4. Step 4: Simplify right side
    83,210.70x = 8,742,128,623.61
  5. Step 5: Solve for x
    x = 8,742,128,623.61/83,210.70
  6. Step 6: Final answer
    x = 105,060.15

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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.