Home / 77,386.84-115,878.66-42,254.44

Finding the Fourth Proportional to 77,386.84, 115,878.66 and 42,254.44

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Solution

The fourth proportional to 77,386.84, 115,878.66 and 42,254.44 is: 63,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,386.84 : 115,878.66 = 42,254.44 : x
  2. Step 2: Convert to fraction form
    77,386.84/115,878.66 = 42,254.44/x
  3. Step 3: Cross multiply
    77,386.84x = 115,878.66 × 42,254.44
  4. Step 4: Simplify right side
    77,386.84x = 4,896,387,886.25
  5. Step 5: Solve for x
    x = 4,896,387,886.25/77,386.84
  6. Step 6: Final answer
    x = 63,271.58

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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.