Home / 71,388.12-98,515.58-42,709.00

Finding the Fourth Proportional to 71,388.12, 98,515.58 and 42,709.00

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Solution

The fourth proportional to 71,388.12, 98,515.58 and 42,709.00 is: 58,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388.12 : 98,515.58 = 42,709.00 : x
  2. Step 2: Convert to fraction form
    71,388.12/98,515.58 = 42,709.00/x
  3. Step 3: Cross multiply
    71,388.12x = 98,515.58 × 42,709.00
  4. Step 4: Simplify right side
    71,388.12x = 4,207,501,430.01
  5. Step 5: Solve for x
    x = 4,207,501,430.01/71,388.12
  6. Step 6: Final answer
    x = 58,938.40

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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.