Home / 91,314.48-125,779.62-64,409.70

Finding the Fourth Proportional to 91,314.48, 125,779.62 and 64,409.70

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Solution

The fourth proportional to 91,314.48, 125,779.62 and 64,409.70 is: 88,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,314.48 : 125,779.62 = 64,409.70 : x
  2. Step 2: Convert to fraction form
    91,314.48/125,779.62 = 64,409.70/x
  3. Step 3: Cross multiply
    91,314.48x = 125,779.62 × 64,409.70
  4. Step 4: Simplify right side
    91,314.48x = 8,101,427,590.31
  5. Step 5: Solve for x
    x = 8,101,427,590.31/91,314.48
  6. Step 6: Final answer
    x = 88,720.08

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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.