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Finding the Fourth Proportional to 84,959.65, 127,444.18 and 28,031.30

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Solution

The fourth proportional to 84,959.65, 127,444.18 and 28,031.30 is: 42,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,959.65 : 127,444.18 = 28,031.30 : x
  2. Step 2: Convert to fraction form
    84,959.65/127,444.18 = 28,031.30/x
  3. Step 3: Cross multiply
    84,959.65x = 127,444.18 × 28,031.30
  4. Step 4: Simplify right side
    84,959.65x = 3,572,426,383.95
  5. Step 5: Solve for x
    x = 3,572,426,383.95/84,959.65
  6. Step 6: Final answer
    x = 42,048.50

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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.