Home / 91,942.72-126,929.32-61,886.08

Finding the Fourth Proportional to 91,942.72, 126,929.32 and 61,886.08

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Solution

The fourth proportional to 91,942.72, 126,929.32 and 61,886.08 is: 85,435.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,942.72 : 126,929.32 = 61,886.08 : x
  2. Step 2: Convert to fraction form
    91,942.72/126,929.32 = 61,886.08/x
  3. Step 3: Cross multiply
    91,942.72x = 126,929.32 × 61,886.08
  4. Step 4: Simplify right side
    91,942.72x = 7,855,158,051.87
  5. Step 5: Solve for x
    x = 7,855,158,051.87/91,942.72
  6. Step 6: Final answer
    x = 85,435.35

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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.