Home / 56,815.08-78,407.48-31,664.76

Finding the Fourth Proportional to 56,815.08, 78,407.48 and 31,664.76

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Solution

The fourth proportional to 56,815.08, 78,407.48 and 31,664.76 is: 43,698.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,815.08 : 78,407.48 = 31,664.76 : x
  2. Step 2: Convert to fraction form
    56,815.08/78,407.48 = 31,664.76/x
  3. Step 3: Cross multiply
    56,815.08x = 78,407.48 × 31,664.76
  4. Step 4: Simplify right side
    56,815.08x = 2,482,754,036.40
  5. Step 5: Solve for x
    x = 2,482,754,036.40/56,815.08
  6. Step 6: Final answer
    x = 43,698.86

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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.