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Finding the Fourth Proportional to 72,802.20, 109,206.90 and 37,810.20

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Solution

The fourth proportional to 72,802.20, 109,206.90 and 37,810.20 is: 56,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,802.20 : 109,206.90 = 37,810.20 : x
  2. Step 2: Convert to fraction form
    72,802.20/109,206.90 = 37,810.20/x
  3. Step 3: Cross multiply
    72,802.20x = 109,206.90 × 37,810.20
  4. Step 4: Simplify right side
    72,802.20x = 4,129,134,730.38
  5. Step 5: Solve for x
    x = 4,129,134,730.38/72,802.20
  6. Step 6: Final answer
    x = 56,717.17

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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.