Home / 85,917.80-118,567.55-47,678.10

Finding the Fourth Proportional to 85,917.80, 118,567.55 and 47,678.10

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Solution

The fourth proportional to 85,917.80, 118,567.55 and 47,678.10 is: 65,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,917.80 : 118,567.55 = 47,678.10 : x
  2. Step 2: Convert to fraction form
    85,917.80/118,567.55 = 47,678.10/x
  3. Step 3: Cross multiply
    85,917.80x = 118,567.55 × 47,678.10
  4. Step 4: Simplify right side
    85,917.80x = 5,653,075,267.26
  5. Step 5: Solve for x
    x = 5,653,075,267.26/85,917.80
  6. Step 6: Final answer
    x = 65,796.33

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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.