Home / 86,030.72-118,728.32-48,307.84

Finding the Fourth Proportional to 86,030.72, 118,728.32 and 48,307.84

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Solution

The fourth proportional to 86,030.72, 118,728.32 and 48,307.84 is: 66,668.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,030.72 : 118,728.32 = 48,307.84 : x
  2. Step 2: Convert to fraction form
    86,030.72/118,728.32 = 48,307.84/x
  3. Step 3: Cross multiply
    86,030.72x = 118,728.32 × 48,307.84
  4. Step 4: Simplify right side
    86,030.72x = 5,735,508,686.03
  5. Step 5: Solve for x
    x = 5,735,508,686.03/86,030.72
  6. Step 6: Final answer
    x = 66,668.15

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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.