Home / 56,831.78-78,412.02-36,689.60

Finding the Fourth Proportional to 56,831.78, 78,412.02 and 36,689.60

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Solution

The fourth proportional to 56,831.78, 78,412.02 and 36,689.60 is: 50,621.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,831.78 : 78,412.02 = 36,689.60 : x
  2. Step 2: Convert to fraction form
    56,831.78/78,412.02 = 36,689.60/x
  3. Step 3: Cross multiply
    56,831.78x = 78,412.02 × 36,689.60
  4. Step 4: Simplify right side
    56,831.78x = 2,876,905,648.99
  5. Step 5: Solve for x
    x = 2,876,905,648.99/56,831.78
  6. Step 6: Final answer
    x = 50,621.42

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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.