Home / 56,985.08-78,639.20-31,490.73

Finding the Fourth Proportional to 56,985.08, 78,639.20 and 31,490.73

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Solution

The fourth proportional to 56,985.08, 78,639.20 and 31,490.73 is: 43,457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.08 : 78,639.20 = 31,490.73 : x
  2. Step 2: Convert to fraction form
    56,985.08/78,639.20 = 31,490.73/x
  3. Step 3: Cross multiply
    56,985.08x = 78,639.20 × 31,490.73
  4. Step 4: Simplify right side
    56,985.08x = 2,476,405,657.16
  5. Step 5: Solve for x
    x = 2,476,405,657.16/56,985.08
  6. Step 6: Final answer
    x = 43,457.09

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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.