Home / 98,784.32-136,322.08-54,072

Finding the Fourth Proportional to 98,784.32, 136,322.08 and 54,072

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Solution

The fourth proportional to 98,784.32, 136,322.08 and 54,072 is: 74,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,784.32 : 136,322.08 = 54,072 : x
  2. Step 2: Convert to fraction form
    98,784.32/136,322.08 = 54,072/x
  3. Step 3: Cross multiply
    98,784.32x = 136,322.08 × 54,072
  4. Step 4: Simplify right side
    98,784.32x = 7,371,207,509.76
  5. Step 5: Solve for x
    x = 7,371,207,509.76/98,784.32
  6. Step 6: Final answer
    x = 74,619.21

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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.