Home / 78,860.69-118,192.59-39,429.08

Finding the Fourth Proportional to 78,860.69, 118,192.59 and 39,429.08

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Solution

The fourth proportional to 78,860.69, 118,192.59 and 39,429.08 is: 59,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,860.69 : 118,192.59 = 39,429.08 : x
  2. Step 2: Convert to fraction form
    78,860.69/118,192.59 = 39,429.08/x
  3. Step 3: Cross multiply
    78,860.69x = 118,192.59 × 39,429.08
  4. Step 4: Simplify right side
    78,860.69x = 4,660,224,298.41
  5. Step 5: Solve for x
    x = 4,660,224,298.41/78,860.69
  6. Step 6: Final answer
    x = 59,094.39

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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.