Home / 78,690.72-118,030.08-39,237.12

Finding the Fourth Proportional to 78,690.72, 118,030.08 and 39,237.12

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Solution

The fourth proportional to 78,690.72, 118,030.08 and 39,237.12 is: 58,852.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,690.72 : 118,030.08 = 39,237.12 : x
  2. Step 2: Convert to fraction form
    78,690.72/118,030.08 = 39,237.12/x
  3. Step 3: Cross multiply
    78,690.72x = 118,030.08 × 39,237.12
  4. Step 4: Simplify right side
    78,690.72x = 4,631,160,412.57
  5. Step 5: Solve for x
    x = 4,631,160,412.57/78,690.72
  6. Step 6: Final answer
    x = 58,852.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.