Home / 77,038.20-115,557.30-37,620.60

Finding the Fourth Proportional to 77,038.20, 115,557.30 and 37,620.60

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Solution

The fourth proportional to 77,038.20, 115,557.30 and 37,620.60 is: 56,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,038.20 : 115,557.30 = 37,620.60 : x
  2. Step 2: Convert to fraction form
    77,038.20/115,557.30 = 37,620.60/x
  3. Step 3: Cross multiply
    77,038.20x = 115,557.30 × 37,620.60
  4. Step 4: Simplify right side
    77,038.20x = 4,347,334,960.38
  5. Step 5: Solve for x
    x = 4,347,334,960.38/77,038.20
  6. Step 6: Final answer
    x = 56,430.90

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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.