Home / 55,430.60-83,145.90-38,809.40

Finding the Fourth Proportional to 55,430.60, 83,145.90 and 38,809.40

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Solution

The fourth proportional to 55,430.60, 83,145.90 and 38,809.40 is: 58,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,430.60 : 83,145.90 = 38,809.40 : x
  2. Step 2: Convert to fraction form
    55,430.60/83,145.90 = 38,809.40/x
  3. Step 3: Cross multiply
    55,430.60x = 83,145.90 × 38,809.40
  4. Step 4: Simplify right side
    55,430.60x = 3,226,842,491.46
  5. Step 5: Solve for x
    x = 3,226,842,491.46/55,430.60
  6. Step 6: Final answer
    x = 58,214.10

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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.