Home / 58,777.77-81,138.15-39,683.42

Finding the Fourth Proportional to 58,777.77, 81,138.15 and 39,683.42

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Solution

The fourth proportional to 58,777.77, 81,138.15 and 39,683.42 is: 54,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,777.77 : 81,138.15 = 39,683.42 : x
  2. Step 2: Convert to fraction form
    58,777.77/81,138.15 = 39,683.42/x
  3. Step 3: Cross multiply
    58,777.77x = 81,138.15 × 39,683.42
  4. Step 4: Simplify right side
    58,777.77x = 3,219,838,878.78
  5. Step 5: Solve for x
    x = 3,219,838,878.78/58,777.77
  6. Step 6: Final answer
    x = 54,779.87

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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.