Home / 76,774.91-105,946.02-42,787.08

Finding the Fourth Proportional to 76,774.91, 105,946.02 and 42,787.08

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Solution

The fourth proportional to 76,774.91, 105,946.02 and 42,787.08 is: 59,044.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,774.91 : 105,946.02 = 42,787.08 : x
  2. Step 2: Convert to fraction form
    76,774.91/105,946.02 = 42,787.08/x
  3. Step 3: Cross multiply
    76,774.91x = 105,946.02 × 42,787.08
  4. Step 4: Simplify right side
    76,774.91x = 4,533,120,833.42
  5. Step 5: Solve for x
    x = 4,533,120,833.42/76,774.91
  6. Step 6: Final answer
    x = 59,044.30

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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.