Home / 66,528,080.30-99,792,120.45-21,089,801.90

Finding the Fourth Proportional to 66,528,080.30, 99,792,120.45 and 21,089,801.90

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Solution

The fourth proportional to 66,528,080.30, 99,792,120.45 and 21,089,801.90 is: 31,634,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528,080.30 : 99,792,120.45 = 21,089,801.90 : x
  2. Step 2: Convert to fraction form
    66,528,080.30/99,792,120.45 = 21,089,801.90/x
  3. Step 3: Cross multiply
    66,528,080.30x = 99,792,120.45 × 21,089,801.90
  4. Step 4: Simplify right side
    66,528,080.30x = 2,104,596,051,471,438.75
  5. Step 5: Solve for x
    x = 2,104,596,051,471,438.75/66,528,080.30
  6. Step 6: Final answer
    x = 31,634,702.85

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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.