Home / 72,498.40-100,056.56-40,661.28

Finding the Fourth Proportional to 72,498.40, 100,056.56 and 40,661.28

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Solution

The fourth proportional to 72,498.40, 100,056.56 and 40,661.28 is: 56,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,498.40 : 100,056.56 = 40,661.28 : x
  2. Step 2: Convert to fraction form
    72,498.40/100,056.56 = 40,661.28/x
  3. Step 3: Cross multiply
    72,498.40x = 100,056.56 × 40,661.28
  4. Step 4: Simplify right side
    72,498.40x = 4,068,427,802.00
  5. Step 5: Solve for x
    x = 4,068,427,802.00/72,498.40
  6. Step 6: Final answer
    x = 56,117.48

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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.