Home / 78,017,028.29-117,031,003.02-31,330,507.32

Finding the Fourth Proportional to 78,017,028.29, 117,031,003.02 and 31,330,507.32

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Solution

The fourth proportional to 78,017,028.29, 117,031,003.02 and 31,330,507.32 is: 46,997,953.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,017,028.29 : 117,031,003.02 = 31,330,507.32 : x
  2. Step 2: Convert to fraction form
    78,017,028.29/117,031,003.02 = 31,330,507.32/x
  3. Step 3: Cross multiply
    78,017,028.29x = 117,031,003.02 × 31,330,507.32
  4. Step 4: Simplify right side
    78,017,028.29x = 3,666,640,697,089,677.50
  5. Step 5: Solve for x
    x = 3,666,640,697,089,677.50/78,017,028.29
  6. Step 6: Final answer
    x = 46,997,953.88

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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.