Home / 72,135.46-99,547.00-40,304.36

Finding the Fourth Proportional to 72,135.46, 99,547.00 and 40,304.36

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Solution

The fourth proportional to 72,135.46, 99,547.00 and 40,304.36 is: 55,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.46 : 99,547.00 = 40,304.36 : x
  2. Step 2: Convert to fraction form
    72,135.46/99,547.00 = 40,304.36/x
  3. Step 3: Cross multiply
    72,135.46x = 99,547.00 × 40,304.36
  4. Step 4: Simplify right side
    72,135.46x = 4,012,178,106.41
  5. Step 5: Solve for x
    x = 4,012,178,106.41/72,135.46
  6. Step 6: Final answer
    x = 55,620.05

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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.