Home / 85,702.17-118,300.74-51,712.09

Finding the Fourth Proportional to 85,702.17, 118,300.74 and 51,712.09

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Solution

The fourth proportional to 85,702.17, 118,300.74 and 51,712.09 is: 71,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,702.17 : 118,300.74 = 51,712.09 : x
  2. Step 2: Convert to fraction form
    85,702.17/118,300.74 = 51,712.09/x
  3. Step 3: Cross multiply
    85,702.17x = 118,300.74 × 51,712.09
  4. Step 4: Simplify right side
    85,702.17x = 6,117,578,024.27
  5. Step 5: Solve for x
    x = 6,117,578,024.27/85,702.17
  6. Step 6: Final answer
    x = 71,381.84

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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.