Home / 81,311.63-112,182.93-47,312.91

Finding the Fourth Proportional to 81,311.63, 112,182.93 and 47,312.91

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Solution

The fourth proportional to 81,311.63, 112,182.93 and 47,312.91 is: 65,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,311.63 : 112,182.93 = 47,312.91 : x
  2. Step 2: Convert to fraction form
    81,311.63/112,182.93 = 47,312.91/x
  3. Step 3: Cross multiply
    81,311.63x = 112,182.93 × 47,312.91
  4. Step 4: Simplify right side
    81,311.63x = 5,307,700,870.63
  5. Step 5: Solve for x
    x = 5,307,700,870.63/81,311.63
  6. Step 6: Final answer
    x = 65,276.04

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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.