Home / 45,979.22-63,432.95-28,978.94

Finding the Fourth Proportional to 45,979.22, 63,432.95 and 28,978.94

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Solution

The fourth proportional to 45,979.22, 63,432.95 and 28,978.94 is: 39,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,979.22 : 63,432.95 = 28,978.94 : x
  2. Step 2: Convert to fraction form
    45,979.22/63,432.95 = 28,978.94/x
  3. Step 3: Cross multiply
    45,979.22x = 63,432.95 × 28,978.94
  4. Step 4: Simplify right side
    45,979.22x = 1,838,219,665.76
  5. Step 5: Solve for x
    x = 1,838,219,665.76/45,979.22
  6. Step 6: Final answer
    x = 39,979.36

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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.