Home / 94,785.12-130,762.80-66,509.28

Finding the Fourth Proportional to 94,785.12, 130,762.80 and 66,509.28

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Solution

The fourth proportional to 94,785.12, 130,762.80 and 66,509.28 is: 91,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,785.12 : 130,762.80 = 66,509.28 : x
  2. Step 2: Convert to fraction form
    94,785.12/130,762.80 = 66,509.28/x
  3. Step 3: Cross multiply
    94,785.12x = 130,762.80 × 66,509.28
  4. Step 4: Simplify right side
    94,785.12x = 8,696,939,678.78
  5. Step 5: Solve for x
    x = 8,696,939,678.78/94,785.12
  6. Step 6: Final answer
    x = 91,754.27

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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.