Home / 78,615.03-108,485.13-42,804.93

Finding the Fourth Proportional to 78,615.03, 108,485.13 and 42,804.93

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Solution

The fourth proportional to 78,615.03, 108,485.13 and 42,804.93 is: 59,068.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,615.03 : 108,485.13 = 42,804.93 : x
  2. Step 2: Convert to fraction form
    78,615.03/108,485.13 = 42,804.93/x
  3. Step 3: Cross multiply
    78,615.03x = 108,485.13 × 42,804.93
  4. Step 4: Simplify right side
    78,615.03x = 4,643,698,395.69
  5. Step 5: Solve for x
    x = 4,643,698,395.69/78,615.03
  6. Step 6: Final answer
    x = 59,068.84

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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.