Home / 85,240.63-127,697.28-47,686.91

Finding the Fourth Proportional to 85,240.63, 127,697.28 and 47,686.91

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Solution

The fourth proportional to 85,240.63, 127,697.28 and 47,686.91 is: 71,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,240.63 : 127,697.28 = 47,686.91 : x
  2. Step 2: Convert to fraction form
    85,240.63/127,697.28 = 47,686.91/x
  3. Step 3: Cross multiply
    85,240.63x = 127,697.28 × 47,686.91
  4. Step 4: Simplify right side
    85,240.63x = 6,089,487,881.29
  5. Step 5: Solve for x
    x = 6,089,487,881.29/85,240.63
  6. Step 6: Final answer
    x = 71,438.79

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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.