Home / 88,170.28-121,688.73-49,931.80

Finding the Fourth Proportional to 88,170.28, 121,688.73 and 49,931.80

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Solution

The fourth proportional to 88,170.28, 121,688.73 and 49,931.80 is: 68,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,170.28 : 121,688.73 = 49,931.80 : x
  2. Step 2: Convert to fraction form
    88,170.28/121,688.73 = 49,931.80/x
  3. Step 3: Cross multiply
    88,170.28x = 121,688.73 × 49,931.80
  4. Step 4: Simplify right side
    88,170.28x = 6,076,136,470.51
  5. Step 5: Solve for x
    x = 6,076,136,470.51/88,170.28
  6. Step 6: Final answer
    x = 68,913.66

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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.