Home / 78,528,087.80-117,792,131.70-30,659,031.80

Finding the Fourth Proportional to 78,528,087.80, 117,792,131.70 and 30,659,031.80

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Solution

The fourth proportional to 78,528,087.80, 117,792,131.70 and 30,659,031.80 is: 45,988,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,528,087.80 : 117,792,131.70 = 30,659,031.80 : x
  2. Step 2: Convert to fraction form
    78,528,087.80/117,792,131.70 = 30,659,031.80/x
  3. Step 3: Cross multiply
    78,528,087.80x = 117,792,131.70 × 30,659,031.80
  4. Step 4: Simplify right side
    78,528,087.80x = 3,611,392,711,580,088
  5. Step 5: Solve for x
    x = 3,611,392,711,580,088/78,528,087.80
  6. Step 6: Final answer
    x = 45,988,547.70

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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.