Home / 78,699.13-118,060.32-28,094.23

Finding the Fourth Proportional to 78,699.13, 118,060.32 and 28,094.23

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Solution

The fourth proportional to 78,699.13, 118,060.32 and 28,094.23 is: 42,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.13 : 118,060.32 = 28,094.23 : x
  2. Step 2: Convert to fraction form
    78,699.13/118,060.32 = 28,094.23/x
  3. Step 3: Cross multiply
    78,699.13x = 118,060.32 × 28,094.23
  4. Step 4: Simplify right side
    78,699.13x = 3,316,813,783.95
  5. Step 5: Solve for x
    x = 3,316,813,783.95/78,699.13
  6. Step 6: Final answer
    x = 42,145.49

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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.