Home / 85,784.95-118,381.80-47,022.40

Finding the Fourth Proportional to 85,784.95, 118,381.80 and 47,022.40

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Solution

The fourth proportional to 85,784.95, 118,381.80 and 47,022.40 is: 64,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,784.95 : 118,381.80 = 47,022.40 : x
  2. Step 2: Convert to fraction form
    85,784.95/118,381.80 = 47,022.40/x
  3. Step 3: Cross multiply
    85,784.95x = 118,381.80 × 47,022.40
  4. Step 4: Simplify right side
    85,784.95x = 5,566,596,352.32
  5. Step 5: Solve for x
    x = 5,566,596,352.32/85,784.95
  6. Step 6: Final answer
    x = 64,890.13

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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.