Home / 90,389.04-124,722.36-56,831.28

Finding the Fourth Proportional to 90,389.04, 124,722.36 and 56,831.28

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Solution

The fourth proportional to 90,389.04, 124,722.36 and 56,831.28 is: 78,418.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.04 : 124,722.36 = 56,831.28 : x
  2. Step 2: Convert to fraction form
    90,389.04/124,722.36 = 56,831.28/x
  3. Step 3: Cross multiply
    90,389.04x = 124,722.36 × 56,831.28
  4. Step 4: Simplify right side
    90,389.04x = 7,088,131,363.42
  5. Step 5: Solve for x
    x = 7,088,131,363.42/90,389.04
  6. Step 6: Final answer
    x = 78,418.04

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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.