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Finding the Fourth Proportional to 56,970.99, 78,568.88 and 47,442.42

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Solution

The fourth proportional to 56,970.99, 78,568.88 and 47,442.42 is: 65,427.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,970.99 : 78,568.88 = 47,442.42 : x
  2. Step 2: Convert to fraction form
    56,970.99/78,568.88 = 47,442.42/x
  3. Step 3: Cross multiply
    56,970.99x = 78,568.88 × 47,442.42
  4. Step 4: Simplify right side
    56,970.99x = 3,727,497,566.68
  5. Step 5: Solve for x
    x = 3,727,497,566.68/56,970.99
  6. Step 6: Final answer
    x = 65,427.99

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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.