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Finding the Fourth Proportional to 98,807.75, 136,354.77 and 53,485.59

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Solution

The fourth proportional to 98,807.75, 136,354.77 and 53,485.59 is: 73,810.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,807.75 : 136,354.77 = 53,485.59 : x
  2. Step 2: Convert to fraction form
    98,807.75/136,354.77 = 53,485.59/x
  3. Step 3: Cross multiply
    98,807.75x = 136,354.77 × 53,485.59
  4. Step 4: Simplify right side
    98,807.75x = 7,293,015,322.76
  5. Step 5: Solve for x
    x = 7,293,015,322.76/98,807.75
  6. Step 6: Final answer
    x = 73,810.15

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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.